Email: "Insert Table" keeps resizing the cells as I type

Email: "Insert Table" keeps resizing the cells as I type

I want to insert a table with 14 rows and 5 columns. Easy.

As I type in each of the cells, the cells keep resizing as the more characters are inputted. Frustrating.

How do I keep the cells to stay/keep/maintain the initial size if all the small amount of characters fit into the cell?